EP0119606A2 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP0119606A2
EP0119606A2 EP84102899A EP84102899A EP0119606A2 EP 0119606 A2 EP0119606 A2 EP 0119606A2 EP 84102899 A EP84102899 A EP 84102899A EP 84102899 A EP84102899 A EP 84102899A EP 0119606 A2 EP0119606 A2 EP 0119606A2
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EP
European Patent Office
Prior art keywords
primary
heat exchanger
outer tube
tube
return
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84102899A
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German (de)
French (fr)
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EP0119606A3 (en
EP0119606B1 (en
Inventor
Hans Dr. Viessmann
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Individual
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Individual
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Publication date
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Priority to AT84102899T priority Critical patent/ATE28702T1/en
Publication of EP0119606A2 publication Critical patent/EP0119606A2/en
Publication of EP0119606A3 publication Critical patent/EP0119606A3/en
Application granted granted Critical
Publication of EP0119606B1 publication Critical patent/EP0119606B1/en
Expired legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
    • G05D23/121—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid characterised by the sensing element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/14—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically both tubes being bent

Definitions

  • the invention relates to a heat exchanger, in particular for heat conversion in district heating systems, consisting of a helical double pipe coil, each with separate supply and return connections for the passage of a primary and a secondary medium, the outer and inner pipes including a narrow passage gap for the primary medium.
  • Heat exchangers of the type mentioned are known per se and in use. Such heat exchangers are generally used to transfer the heat supplied by the district heating through the primary medium to the secondary medium, which is used, for example, for domestic heating and or domestic hot water preparation.
  • heat exchangers are bzu.
  • a control valve which is controlled by a temperature sensor arranged on the return side. If there is a higher temperature in the primary medium return due to low heat consumption, the valve is closed or throttled in order to reduce or close the primary medium supply.
  • the temperature sensor it is desirable to arrange the temperature sensor in the immediate area where the primary medium return and the secondary medium supply meet (the counterflow principle is generally used in such heat exchangers). Since efforts are being made to build such heat exchangers as compactly as possible, it is extremely difficult to find a suitable location for the temperature sensor that meets the aforementioned condition.
  • the invention is therefore based on the object of improving a heat exchanger of the type mentioned in such a way that, despite the compact design (design of the heat exchanger in the form of a helically wound coil with flow and return connections for the two media, directly at the ends of the coil with close nesting of the two pipes) to place the measuring point directly on the heat exchanger itself, specifically where the two media still flow past each other separately through walls.
  • the heat exchanger is explained in more detail below with reference to the drawing of an exemplary embodiment.
  • 1 to 5 are designated by 1, the primary return and secondary forward end of the coil 2, with 3 the outer tube, with 7 the temperature sensor, which protrudes into the interior 5 of the expanded tube 3, which is in the form of a cylindrical housing 8 is with 6 the inner tube, which, apart from smooth ends 14 is provided in a manner known per se with helically connected walls 15, with lo the primary return and with 11 the primary flow connection, which are provided with corresponding connecting pieces 12, 13.
  • the connecting pieces for the secondary medium are designated 16.17.
  • the extension of the outer tube 3 is in the form of a small cylindrical housing 8, from which it can be seen that on one side the outer tube 3 is connected liquid-tight to the end wall 9 'of the housing 8, which is penetrated by the inner tube 15 which, with its smooth end 14, is connected to the end wall 9 in a liquid-tight manner and emerges from the housing 8 on the other side.
  • the temperature sensor insert 4 is also arranged such that the temperature sensor 7 to be inserted there protrudes into the interior 5 and, as shown, is in the immediate vicinity of the inner tube 15.
  • the line 18 of the temperature sensor 7 is then in with the valve, not shown, for the primary medium flow functional connection.
  • the primary medium return connection 10 coming from the housing 8 is advantageously arranged such that it is coaxial with the primary medium supply connection 11, as can be seen in FIG. 2.5, whereby such heat exchangers, which are naturally located within a heat-insulated housing 19, are stacked and aligned with one another can be connected in series.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Power Steering Mechanism (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

1. Heat exchanger, especially for heat conversion in district heating systems, consisting of a double-tube coil with respective separate forward-flow and return-flow connections for conveying a primary medium and a secondary medium in countercurrent, the outer tube and inner tube enclosing a narrow passage gap of annular cross-section for the primary medium which is controlled by means of a regulating valve actuated by a temperature sensor located on the return-flow side, characterized in that the outher tube (3) is widened at the end (1) of the coil (2) located on the same side as the primary return flow and secondary forward flow and is equipped with a temperature-sensor insert connector (4), and the temperature sensor (7) is arranged in the latter so as to project into the interior (5) of the widened outer tube (3) and extend directly adjacent to the inner tube (6) passing through the interior (5) in a liquid-tight manner.

Description

DieErfindung betrifft einen Wärmetauscher, insbesondere zur Wärmeumsetzung in Fernheizungsanlagen, bestehend aus einer schraubenlinienförmig verlaufenden Doppelrohrwendel mit jeweils separaten Vor- und RücklaufanschlQssen für die Durchleitung eines Primär-und eines Sekundärmediums, Wobei das Außen- und Innenrohr einen engen Durchlaufspalt für das Primärmedium einschließen.The invention relates to a heat exchanger, in particular for heat conversion in district heating systems, consisting of a helical double pipe coil, each with separate supply and return connections for the passage of a primary and a secondary medium, the outer and inner pipes including a narrow passage gap for the primary medium.

Wärmetauscher der genannten Art sind an sich bekannt und in Benutzung. Derartige Wärmetauscher dienen in der Regel dazu, die von der Fernheizung durch das Primärmedium gelieferte Wärme auf das Sekundärmedium zu übertragen, das bspw. zur Hausheizung und oder Brauchwasserbereitung dient.Heat exchangers of the type mentioned are known per se and in use. Such heat exchangers are generally used to transfer the heat supplied by the district heating through the primary medium to the secondary medium, which is used, for example, for domestic heating and or domestic hot water preparation.

Seitens der Fernheizungsbetreiber bestehen bzgl. der Rücklauftemperatur des Primärmediums bestimmte Auflagen und zwar in der Regel dahingehend, die unabhängig vom Betriebszustand des Wärmeverbrauchsbereiches bei etwa 30° liegen soll.On the part of the district heating operator, there are certain requirements with regard to the return temperature of the primary medium, usually as a rule that should be around 30 ° regardless of the operating state of the heat consumption range.

Aus diesem Grunde sind derartige Wärmetauscher bzu. die Vorlaufleitung des Primärmediums mit einem Regelventil versehen, das von einem rücklaufseitig angeordneten Temperaturfühler gesteuert wird. Sofern sich aufgrund geringer Wärmeabnahme eine höhere Temperatur im Primärmediumsrücklauf einstellt,wird das Ventil geschlossen bzw. gedrosselt, um den Primärmediumsvorlauf zu reduzieren bzw. ganz zu schließen. Aus diesen steuerungs - und regeltechnischen Gründen ist es wünschenswert, den Temperaturfühler im unmittelbaren Bereich dort anzuordnen, wo der Primärmediumsrücklauf und der Sekundärmediumsvorlauf (es wird bei derartigen Wärmetauschern in der Regel das Gegenstromprinzip angewendet) zusammentreffen. Da man bemüht ist, derartige Wärmetauscher möglichst kompakt zu bauen, ist es außerordentlich schwierig, eine geeignete Anordnungsstelle für den Temperaturfühler, die die vorgenannte Bedingung erfüllt, zu finden. Aus diesem Grunde hat man eine separate Meßstelle für den Temperaturfühler vorgesehen, die jedoch zusätzliche Maßnahmen verlangt, um das rücklaufende Primärmedium in diesen Bereich zu bringen. Wollte man, was an sich wünschenswert wäre, eine Mischtemperatur der beiden Medien erfühlen, so wären weitere zusätzliche Maßnahmen erforderlich, um auch das vorlaufende Sekundärmedium an die Meßstelle zu bringen. In Rücksicht auf diesen zusätzlichen Aufwand wurde deshalb auf eine Mischtemperaturfühlung verzichtet und man hat eine mehr oder weniger träge Regelung in Kauf genommen.For this reason, such heat exchangers are bzu. Provide the flow line of the primary medium with a control valve, which is controlled by a temperature sensor arranged on the return side. If there is a higher temperature in the primary medium return due to low heat consumption, the valve is closed or throttled in order to reduce or close the primary medium supply. For these control and regulatory reasons, it is desirable to arrange the temperature sensor in the immediate area where the primary medium return and the secondary medium supply meet (the counterflow principle is generally used in such heat exchangers). Since efforts are being made to build such heat exchangers as compactly as possible, it is extremely difficult to find a suitable location for the temperature sensor that meets the aforementioned condition. For this reason, a separate measuring point for the temperature sensor has been provided, but this requires additional measures to bring the returning primary medium into this area. If one wanted to feel a mixing temperature of the two media, which would be desirable in itself, further additional measures would be necessary to include the leading secondary medium to bring to the measuring point. In view of this additional effort, a mixed temperature sensor was therefore dispensed with and a more or less sluggish regulation was accepted.

DerErfindung liegt demgemäß die Aufgabe zugrunde, einen Wärmetauscher der eingangs genannten Art dahingehend zu verbessern, daß trotz der kompakten Bauweise (Ausbildung des Wärmetauschers in Form einer schraubenlinienförmig gewickelten Wendel mit Vor- und Rücklaufanschlüssen für die beiden Medien unmittelbar an den Enden der Wendel bei enger Ineinanderschachtelung der beiden Rohre) die Meßstelle unmittelbar am Wärmetauscher selbst unterzubringen und zwar dort, wo die beiden Medien noch gemeinsam durch Wände getrennt aneinander vorbeiströmen.The invention is therefore based on the object of improving a heat exchanger of the type mentioned in such a way that, despite the compact design (design of the heat exchanger in the form of a helically wound coil with flow and return connections for the two media, directly at the ends of the coil with close nesting of the two pipes) to place the measuring point directly on the heat exchanger itself, specifically where the two media still flow past each other separately through walls.

Diese Aufgabe ist mit einem Wärmetauscher der eingangs genannten Art nach derErfindung durch das im Kennzeichen des Hauptanspruches Erfaßte gelöst. Vorteilhafte Weiterbildungen ergeben sich nach den Unteransprüchen.This object is achieved with a heat exchanger of the type mentioned at the beginning according to the invention by what is covered in the characterizing part of the main claim. Advantageous further developments result from the subclaims.

Durch die neuartige Rohrerweiterung unmittelbar am vorlaufseitigen Ende des Sekundärmediums bzu. am rücklaufseitigen Ende des Primärmediums, die in der Praxis in Form eines kleinen, noch näher zu beschreibenden Gehäuses ausgebildet wird, besteht die Möglichkeit, den Temperaturfühler unmittelbar in diesem Bereich des Wärmetauschers anzuordnen, ohne dessen kompakte Bauweise zu beeinträchtigen. Dadurch fallen sämtliche Zusatzmaßnahmen zur Hinführung der zu messenden Medien an eine separate Meßstelle weg; es kann außerdem die Temperatur unmittelbar am Primärmediumsrücklauf bew. Sekundärmediumsvorlauf erfühlt werden, wobei durch diese Anordnung nicht separate Temperaturen der beiden Medien gemessen sondern eine Mischtemperatur erfühlt wird.Due to the new pipe extension directly at the flow end of the secondary medium bzu. at the return end of the primary medium, which in practice in the form of a small, to be described in more detail Housing is formed, it is possible to arrange the temperature sensor directly in this area of the heat exchanger without affecting its compact design. This eliminates all additional measures for guiding the media to be measured to a separate measuring point; the temperature can also be sensed directly at the primary medium return line. Secondary medium supply line, this arrangement not measuring separate temperatures of the two media but sensing a mixed temperature.

Der Wärmetauscher wird nachfolgend anhand der zeichnerischen Darstellung eines Ausführungsbeispieles näher erläutert.The heat exchanger is explained in more detail below with reference to the drawing of an exemplary embodiment.

Es zeigt schematisch

  • Fig. 1 eine Seitenansicht des Wärmetauschers;
  • Fig. 2 eine Vorderansicht des Wärmetauschers;
  • Fig. 3 einen Schnitt durch eine praktische Ausführungsform der Meßstelle des Wärmetauschers;
  • Fig. 4 im Schnitt eine baulische Einzelheit und
  • Fig. 5 eine Draufsicht auf den Wärmetauscher.
It shows schematically
  • Figure 1 is a side view of the heat exchanger.
  • Fig. 2 is a front view of the heat exchanger;
  • 3 shows a section through a practical embodiment of the measuring point of the heat exchanger;
  • Fig. 4 in section a structural detail and
  • Fig. 5 is a plan view of the heat exchanger.

In den Fig. 1 bis 5 sind bezeichnet mit 1 das primärrücklauf- und sekundärvorlaufseitige Ende der Wendel 2, mit 3 das Außenrohr, mit 7 der Temperaturfühler, der in den Innenraum 5 des erweiterten Rohres 3 einragt, das in Form eines zylindrischen Gehäuses 8 ausgebildet ist, mit 6 das Innenrohr, das, abgesehen von glatten Enden 14 in an sich bekannter Weise mit schraubenlinienförmig verbundenen Wänden 15 versehen ist, mit lo der Primärrücklauf- und mit 11 der Primärvorlaufanschluß, die mit entsprechenden Anschlußstutzen 12, 13 versehen sind. Die Anschlußstutzen für das Sekundärmedium sind mit 16,17 bezeichnet.1 to 5 are designated by 1, the primary return and secondary forward end of the coil 2, with 3 the outer tube, with 7 the temperature sensor, which protrudes into the interior 5 of the expanded tube 3, which is in the form of a cylindrical housing 8 is with 6 the inner tube, which, apart from smooth ends 14 is provided in a manner known per se with helically connected walls 15, with lo the primary return and with 11 the primary flow connection, which are provided with corresponding connecting pieces 12, 13. The connecting pieces for the secondary medium are designated 16.17.

Abgesehen von der hier speziell interessierenden Erweiterung des Außenruhres 3 bzw. des Gehäuses 8 bedürfen alle diese Elemente keiner näheren Erläuterung, da insoweit bekannt.Apart from the expansion of the outer stirrer 3 or the housing 8 which is of particular interest here, all of these elements require no further explanation, since they are known to this extent.

Gemäß Fig. 3 ist die Erweiterung des Außenruhres 3 in Form eines kleinen zylindrischen Gehäuses 8 ausgebildet, aus der erkennbar ist, daß auf der einen Seite das Außenrohr 3 flüssigkeitsdicht angeschlossen an der Stirnwand 9' des Gehäuses 8 endet, das vom Innenrohr 15 durchgriffen wird, das mit seinem glatten Ende 14 flüssigkeitsdicht der Stirnwand 9 verbunden auf der anderen Seite aus dem Gehäuse 8 austritt.3, the extension of the outer tube 3 is in the form of a small cylindrical housing 8, from which it can be seen that on one side the outer tube 3 is connected liquid-tight to the end wall 9 'of the housing 8, which is penetrated by the inner tube 15 which, with its smooth end 14, is connected to the end wall 9 in a liquid-tight manner and emerges from the housing 8 on the other side.

An der Stirnwand 9 ist ferner der Temperaturfühlereinsatzstutzen 4 derart angeordnet, daß der dort einzusetzende Temperaturfühler 7 in den Innenraum 5 ragt und sich dabei, wie dargestellt, in unmittelbarer Nachbarschaft zum Innenrohr 15 befindet. Die Leitung 18 des Temperaturfühlers 7 steht dann mit dem nicht dargestellten Ventil für den Primärmediumsvorlauf in funktioneller Verbindung.On the end wall 9, the temperature sensor insert 4 is also arranged such that the temperature sensor 7 to be inserted there protrudes into the interior 5 and, as shown, is in the immediate vicinity of the inner tube 15. The line 18 of the temperature sensor 7 is then in with the valve, not shown, for the primary medium flow functional connection.

Der vom Gehäuse 8 abgehende Primärmediumsrücklaufanschluß lo ist vorteilhaft so angeordnet, daß er koaxial, wie aus Fig. 2,5 erkennbar, zum Primärmediumsvorlaufanschluß 11 steht, wodurch derartige Wärmetauscher, die sich natürlich innerhalb eines wärmeisolierten Umschlies - sungsgehäuses 19 befinden, gestapelt und fluchtend zueinander hintereinander geschaltet werden können.The primary medium return connection 10 coming from the housing 8 is advantageously arranged such that it is coaxial with the primary medium supply connection 11, as can be seen in FIG. 2.5, whereby such heat exchangers, which are naturally located within a heat-insulated housing 19, are stacked and aligned with one another can be connected in series.

Nur der Vollständigkeit halber ist in Fig. 4 im Schnitt das primärvorlauf- und sekundärrücklaufseitige Ende 1' in seiner konstruktiven Gestaltung verdeutlicht.Only for the sake of completeness is shown in Fig. 4 in section the primary flow and secondary return end 1 'in its constructive design.

Claims (5)

1. Wärmetauscher, insbesondere zur Wärmeumsetzung in Fernheizungsanlagen, bestehend aus einer Doppelrohrwendelmit jeweils separaten Vor- und Rücklaufanschlüssen für die Durchleitung eines Primär- und eines Sekundärmediums, wobei das Außen- und Innenrohr einen engen, im Querschnitt ringförmigen Durchlaufspalt für das Primärmedium einschließen, dadurch gekennzeichnet, daß am primärrücklauf- und sekundärvorlaufseitigen Ende (1) der Wendel (2) das Außenrohr (3) erweitert ausgebildet und mit einem Temperaturfühlereinsatzstutzen (4) versehen und in diesem, in den Innenraum (5) des erweiteren Außenrohres (3) einragend, sich unmittelbar benachbart zum den Innenraum (5) flüssigkeitsdicht durchgreifenden Innenrohr (6) erstreckend, der Temperaturfühler (7) angeordnet ist.1. Heat exchanger, in particular for heat conversion in district heating systems, consisting of a double tube coil, each with separate flow and return connections for the passage of a primary and a secondary medium, the outer and inner tubes including a narrow, annular cross-section passage gap for the primary medium, characterized that at the primary return and secondary flow end (1) of the helix (2) the outer tube (3) is expanded and provided with a temperature sensor insert (4) and protruding into the interior (5) of the extended outer tube (3) The temperature sensor (7) is arranged directly adjacent to the inner tube (6) which penetrates the interior (5) in a liquid-tight manner. 2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß das erweiterte Außenrohr (3) in Form eines zylindrischen Gehäuses (8) ausgebildet ist, in dem auf der einen Seite das Außenrohr (3) flüssigkeitsdicht angeschlossen endet, wobei das das Gehäuse (8) durchgreifende Innenrohr (6) auf der anderen Seite flüssigkeitsdicht die Stirnwand (9) des Gehäuses (8) durchgreift.2. Heat exchanger according to claim 1, characterized in that the expanded outer tube (3) is designed in the form of a cylindrical housing (8), in which on one side the outer tube (3) ends connected in a liquid-tight manner, the housing (8) penetrating inner tube (6) on the other side reaches through the end wall (9) of the housing (8) in a liquid-tight manner. 3. Wärmetauscher nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß am Gehäuse (8) bzw. am erweiterten Außenrohr (3) der Primärrücklaufanschluß (la) angeordnet ist.3. Heat exchanger according to claim 1 and / or 2, characterized in that the primary return connection (la) is arranged on the housing (8) or on the expanded outer tube (3). 4. Wärmetauscher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daB der vom Gehäuse (8) bzw. vom erweiterten Außenrohr (3) abgehende Primärrücklauf (la) - und der PrimärvorlaufanschluB (11) mit ihren Anschlußstutzen (12,13) koaxial angeordnet sind.4. Heat exchanger according to one of claims 1 to 3, characterized in that the primary return (la) and the primary flow connection (11) with their connecting pieces (12, 13) coaxial with the housing (8) or from the expanded outer tube (3) are arranged. 5. Wärmetauscher nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daB das Innenrohr (6) in an sich bekannter Weise, abgesehen von glatten Enden (14), mit schraubenlinienförmig verbundenen Wänden (15) versehen ist.5. Heat exchanger according to one of claims 1 to 4, characterized in that the inner tube (6) is provided in a manner known per se, apart from smooth ends (14), with helically connected walls (15).
EP84102899A 1983-03-17 1984-03-16 Heat exchanger Expired EP0119606B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102899T ATE28702T1 (en) 1983-03-17 1984-03-16 HEAT EXCHANGER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8307786U 1983-03-17
DE19838307786U DE8307786U1 (en) 1983-03-17 1983-03-17 HEAT EXCHANGER

Publications (3)

Publication Number Publication Date
EP0119606A2 true EP0119606A2 (en) 1984-09-26
EP0119606A3 EP0119606A3 (en) 1985-03-13
EP0119606B1 EP0119606B1 (en) 1987-07-29

Family

ID=6751215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102899A Expired EP0119606B1 (en) 1983-03-17 1984-03-16 Heat exchanger

Country Status (3)

Country Link
EP (1) EP0119606B1 (en)
AT (1) ATE28702T1 (en)
DE (2) DE8307786U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016026097A1 (en) * 2014-08-20 2016-02-25 Nestec S.A. Continuous-flow water heating assembly and production method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1326896A (en) * 1962-06-27 1963-05-10 Gerdts Gustav F Kg Method and device for introducing a disturbing value in the case of thermostatically controlled devices ensuring the regulation of fluid flows
US3323585A (en) * 1965-08-25 1967-06-06 Robert B Cannon Header structure for heat transfer apparatus
DE2536529A1 (en) * 1975-08-16 1977-02-24 Buderus Eisenwerk Water heater for remote heating installation - has heat exchange surface connected to out and return flow heating pipes
FR2494829A3 (en) * 1980-11-21 1982-05-28 Ciat Sa Coaxial fluid heat exchanger - has container with helicoidally waved pipes for liquid flowing in opposing directions
EP0062691A1 (en) * 1981-04-15 1982-10-20 Elpag Ag Chur Heat exchanger
WO1983001499A1 (en) * 1981-10-26 1983-04-28 Den Bos Gerrit Van Heating system for space heating and tap water heating

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1326896A (en) * 1962-06-27 1963-05-10 Gerdts Gustav F Kg Method and device for introducing a disturbing value in the case of thermostatically controlled devices ensuring the regulation of fluid flows
US3323585A (en) * 1965-08-25 1967-06-06 Robert B Cannon Header structure for heat transfer apparatus
DE2536529A1 (en) * 1975-08-16 1977-02-24 Buderus Eisenwerk Water heater for remote heating installation - has heat exchange surface connected to out and return flow heating pipes
FR2494829A3 (en) * 1980-11-21 1982-05-28 Ciat Sa Coaxial fluid heat exchanger - has container with helicoidally waved pipes for liquid flowing in opposing directions
EP0062691A1 (en) * 1981-04-15 1982-10-20 Elpag Ag Chur Heat exchanger
WO1983001499A1 (en) * 1981-10-26 1983-04-28 Den Bos Gerrit Van Heating system for space heating and tap water heating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016026097A1 (en) * 2014-08-20 2016-02-25 Nestec S.A. Continuous-flow water heating assembly and production method
US10563889B2 (en) 2014-08-20 2020-02-18 Societe Des Produits Nestle S.A. Continuous-flow water heating assembly and production method

Also Published As

Publication number Publication date
DE3465141D1 (en) 1987-09-03
ATE28702T1 (en) 1987-08-15
DE8307786U1 (en) 1983-09-08
EP0119606A3 (en) 1985-03-13
EP0119606B1 (en) 1987-07-29

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